20407972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9127}}^1$

素因数の和:9187

約数の個数: 24

約数和(自身を含む): 39359936

約数和(自身を除く): 18951964

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9127, 18254, 36508, 118651, 237302, 392461, 474604, 784922, 1569844, 5101993, 10203986, 20407972]

約数ペア:

[(1, 20407972), (2, 10203986), (4, 5101993), (13, 1569844), (26, 784922), (43, 474604), (52, 392461), (86, 237302), (172, 118651), (559, 36508), (1118, 18254), (2236, 9127)]